Finding the Fourth Proportional to 2,615.92, 3,609.88 and 1,436.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.92 : 3,609.88 = 1,436.91 : x
2. Step 2: Convert to fraction form
   2,615.92/3,609.88 = 1,436.91/x
3. Step 3: Cross multiply
   2,615.92x = 3,609.88 × 1,436.91
4. Step 4: Simplify right side
   2,615.92x = 5,187,072.67
5. Step 5: Solve for x
   x = 5,187,072.67/2,615.92
6. Step 6: Final answer
   x = 1,982.89